CVE-2013-5018

mediumpriority · track · 18EPSS 0.030 · 87 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.99% (87th) EPSS

CVSS 4.3 · medium

Is it mine?

10 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v2.03.7lowAV:N/AC:M/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

affected products (10)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
opensuse opensuse= 11.4nvdUScpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
opensuse opensuse= 12.2nvdUScpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
opensuse opensuse= 12.3nvdUScpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
strongswan strongswan= 4.1.11nvdUScpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
strongswan strongswan= 5.0.0nvdUScpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
strongswan strongswan= 5.0.1nvdUScpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
strongswan strongswan= 5.0.2nvdUScpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
strongswan strongswan= 5.0.3nvdUScpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
strongswan strongswan= 5.0.4nvdUScpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2013-08-28modified 2026-06-16

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+21039 more

references (27)

External citations — patches, advisories, analysis.

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